(19)

(11)

EP 3 036 570 A2

(12)

(88) Date of publication A3: 26.11.2015 (43) Date of publication: 29.06.2016 Bulletin 2016/26 (21) Application number: 14838696.4 (22) Date of filing: 13.08.2014

(51) International Patent Classification (IPC):  G02B 5/12(2006.01) G02B 5/124(2006.01) G02B 5/22(2006.01) (86) International application number: PCT/US2014/050798 (87) International publication number: WO 2015/026581 (26.02.2015 Gazette 2015/08)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 19.08.2013 US 201361867427 P (71) Applicant: 3M Innovative Properties Company St. Paul, MN 55133-3427 (US)	(72) Inventors: CHATTERJEE, Reema Saint Paul, Minnesota 55133-3427 (US) PETERSON, Jeffrey A. Saint Paul, Minnesota 55133-3427 (US) GERLACH, Christopher P. Saint Paul, Minnesota 55133-3427 (US) MEITZ, David W. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstrasse 3 81675 München 81675 München (DE)